Sicofonte: How could they press the button together when every character has their own buttons? Sanchez will throw a fit if there's any mechanized request to copulation. I'd suggest that a person can select people that are in the same location, select them as "I want to breed with this person", but the choice would be totally invisible to everyone but the picker him/herself. Pregnancy could happen only when both parties have marked each other as a possible breeding partner.
Here's a picture to clear things up a bit
Legend:
1. A "normal" relationship, the woman has a chance of getting pregnant.
2. Popular guy's wife, has a chance of getting pregnant
3. Popular guy himself
4. Popular guy's mistress, has a chance of getting pregnant
5. A confused newspawn testing buttons, can't impregnate anyone because the "relationships" are one way only
6. A gay couple, can't get pregnant but might get STDs if those are implemented
Informing the other party that you're seeking such relationship would be totally left to RP. The downside is that you couldn't be sure if someone has really agreed to breed with you even if they claimed so, but that could be compared to using birth control or being barren. I'd like to hear Sanchez's opinion this, can you find something offensive in that if it's completely invisible?
I think children should be able to attack normally but they would all start out very weak and couldn't wield things like swords, only daggers and slingshots and the like. It's up to the parents to restrict the availability of weapons if they don't like their toddlers stabbing people.